Hoist



C. B. JOHNSON.

HOIST.

APPLICATION FILED DEc.9. 1920.

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HOIST.

APPLICATION FILED Dias. 1920.

Patented Apr. 11', 1922.

3 SHEETS-SHEET 3.

IN VEN TOR. c BY XW ATTORNEY.

-Ty: y @fig PATENT OFFICE. l

`CHARLES B. JOHNSON, OF CHICAGO, ILLINOIS.

HOIST.

Specicaton of Letters Patent.

Patented Apr. 11, 1922.

Application aiednecember 9, 1920. serial No. 429,532.

To all whom t may concern.' l

Be it known thatl, CHARLES B. JOHNSON,

i a citizen of the UnitedStates,l residing at Chicago, in thelcounty of Cook and State of Illinois, have invented certain new and useful Improvements in Hoists, of which vthe following is a specification.

This invention relates to improvements in hoists and more particularly to that type of hoist adapted to transport building materials, equipment, etc., from the ground to the upper stories of a buildingr under construction, to the workmen; or vice versa; and to remove rubbish from the buildingto the rubbishcart. Cne object is to provide a simple and efiicient device of this class that is easily operated, quickly applied to or removed from the building, and the employment of which effects a great saving in time and labor,V thereby materially facilitating building construction generally.

Writh the foregoing and other objects in View the invention consists in the combinationv and arrangement of parts to be hereinafter fully described, pointed out in the appended claims and illustrated in the accompanying drawings which form a part of this application and in which- Fig. `1 is a plan view of my improved hoist illustrating its application. Y

. Fig. 2 is a cross section on line 2 2 of Fig. 1. l

i ig. 3 is a similar view taken on line 3 3 of Fig. 1.

Fig. 4 is a side view, partly in section, of a slightly modified form of hoist illustrating its application.

Fig. 5 illustrates a slightly modified form ofthe device shown in Fig. 4 with the adjustable parts in analtered position.

Fig. 6 is an enlarged sectional view taken on line 6-6 of Fig. 1.

Like reference characters denote corresponding parts throughout the several views:

The reference numeral 1 denotes the columns of a building under construction, 2 the forms in which the concrete joists 3 are molded and 4 a temporary platform in the building adapted to permit materials received from the hoist to gravitate to the ioor of the building, or to be easily loaded upon the hoist. Spaced outwardly from the columns 1 I provide the oppositely disposed channeled guides or uprights 5, the channels 6 of a pair of guides facing each other. The guides 5 are supported in position by the braces 7, the ends 8 of which are secured to the said guides and the opposite ends secured to the adjustable frame composed of the angle pieces 9, substantially L-shaped, the ends of said pieces overlapping each other and being adjustably bolted'together, as

clearly shown in Fig. 1, so thatl the size of the frame may be varied Vlongitudinallyv or transversely to enable it to be secured to columns 1 of varying distances from each other andv of varying diameters or thick'- nesses. The guidesA 5 are built up from the ground, from iioor to floor as the construction of the building progresses, `and when thevjoists 3 are formed the braces 7 are se# cured thereto, as well as to the frame 9, the

braces 7' being retained in position, or left, at each floor until the hoist is removed from this particular part of'the building. The nuts are then removed from the brace-bolts 9a and the braces themselves removed.

operatively arranged in the upper channeled portions 6 of the guides 5 is a sliding frame comprising the upper and lower bars 10, 11, end bars 12 and the vertical intermediate brace bars 13 connecting the bars 10 and 11. To the lower bar 11 I secure one end of the control cable 14 which cable runs up and Overr a pulley 15 carried by the block 16 which is secured to the guides 5, the oppositeeend of said cable being secured to a 'cable drum (not shown) whereby said cable may be wound up or paid out to raise or lower the frame 10, 11, 12. I

' The frameV bar 10 has secured thereto by hinges 17 the bars 18 whereby the platform 19 is supported, said members 18 and 19 being separated vby the cross bars 20. To the bars 18 the telescoping legs 21 are secured by hinges 22, said legs being secured also by hinges 23 to the lower frame bar 11. Legs 24 pivotally secured to the bars 18 are adapted for adjustable connection to the telescoping legs 21, bolts 25 serving to make this connection as well as securing the sections of the said legs 21 in adjusted relation. In the form of platform 19 shown in Figs. 1, 2 and 3 the inner end 26 of the platform is diminished in width to receive the extension arms 27 which are connected by pivot bolts 28 to said platform, said arms 27 being disposed immediately adjacent said guides 5. The platform shown in Fig. 4 is provided with a frame composed of the side plates 29 and end plates 30, the latter having an opening therein which is normally closed by of the legs 21, 24. rlhis platform may be disposed at right angles to the said frame as shownv in Fig. or the free end of the platform may be tilted above the inner end as shown in Fig. 3; or below the inner end as shown inF ig. 4f. The frame 1 0, 11, 12 is raised 'inthe guides 5 by means'of the cable 14; when said cable is paid out from itsfdrum the frame and platform will be lowered by gravity, andvwhen the cable is wound upon its drum the platform will be raised. i

In the form vof platform .shown in Figs. 1, 2 and?) theY extension arms are raised into vertical position asthe platform is lowered from the upper end of the guides 5, the extension arms inclining against said guides. lVhen the platform is raised to or above the upper end of the guides 5 or into the position shown in Fig. Sthe arms 27 will have fallen outwardly over the'upper ends of Y the guides 5 when they will rest upon the frame 1. This platform is loaded with lumber or the like to be raised to the floor at the upper end of the guides 5. lVhen this point is reached the extension'arms will fall loutwardly into such position that the load can gravitatefrom theplatforin over said arms to the floor of the building, or to the false or temporary platform L1 and then to the floor of the building, the free end of the platform being raised relatively to the inner end as shown. Rubbish is removed from the several floors of the building with the platform'and frame shown in Fig. 4, the free end of the platform being tilted downwardly relative to its inner end. The frame is lled withk rubbish and the hoist lowered to a point just above the receiving cart or wagon, the sliding door Slis then raised and the rubbishpermitted to gravitate into the said cart. l The platform shown in Fig. 5 is raised to alevel Withthe temporary building platform t When the wheelbarrows, canbe lreadily Wheeled upon said platform and loaded or unloaded.

. .lVhat is claimed is 1. In a hoist, channeled guides, means for Securing said guides to a support,'a sliding frame operatively arranged in said channeled guides, a platform adjustably carried by said sliding frame, and actuating means for said sliding frame. y i

2." In a hoist, a travelling platform, supports for said platform, an adjustable frame comprising L-shaped angle pieces having their meeting ends overlapped, and' braces connecting said supports and adjustable frame. j

3. In a hoist, channeled guides,"supports therefor, a sliding 'frame operatively arranged in said channeled guides,a platform 'adjustably carried byV said vsliding iframe, and extension arms pivotally carried by said platform and adapted to'rest against said channeled guides when said platform is substantially below the" upper ends of, said guides, andto extend outwardly from said platform over the upper ends of said channeled `guides when said platformy Vis Vflush lwith or above the upper ends-ofsaidchan'- l per ends of vsaid guides, and to extend outj .wardly from said platform overthe upper ends of said channeled guides and to rest upon said supports whensaid platform is flush with or above the upper ends ofsaid channeled guides.

ln Vtestimony that as my own I have hereto afli'Xed my'signature in the presence of two subscribing witnesses. y Y

v 1 j CHARLES B.. JOHNSON.

Witnesses? H. I. JOHNSON, EMEL E. I-IALLimBnRG.`

I' claim the foregoing l 

